SiT8009
High Frequency, Low Power Oscillator
The Smart Timing Choice
The Smart Timing Choice
Features
Applications
Any frequency between 115 MHz and 137 MHz accurate to 6 decimal
places
Ideal for GPON/GPON, network switches, routers. servers,
embedded systems
Operating temperature from -40°C to 85°C. Refer to SiT8918 and
SiT8920 for high temperature options
Ideal for Ethernet, PCI-E, DDR, etc.
Excellent total frequency stability as low as ±20 PPM
Low power consumption of 4.8 mA (typical in 1.8V)
Output enable or standby mode
LVCMOS/HCMOS compatible output
Industry-standard packages: 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2,
7.0 x 5.0 mm x mm
Instant samples with Time Machine II and field programmable
oscillators
Pb-free, RoHS and REACH compliant
Electrical Characteristics[1]
Parameter and Conditions
Symbol
Min.
Typ.
Max.
Unit
Condition
Frequency Range
Output Frequency Range
f
115
–
137
MHz
Frequency Stability and Aging
Frequency Stability
F_stab
-20
–
+20
PPM
-25
–
+25
PPM
–
+50
PPM
-50
Inclusive of Initial tolerance at 25°C, 1st year aging at 25°C, and
variations over operating temperature, rated power supply
voltage and load.
Operating Temperature Range
Operating Temperature Range
T_use
-20
–
+70
°C
Extended Commercial
-40
–
+85
°C
Industrial
Supply Voltage and Current Consumption
Supply Voltage
Current Consumption
Vdd
Idd
1.62
1.8
1.98
V
2.25
2.5
2.75
V
Contact SiTime for 1.5V support
2.52
2.8
3.08
V
2.7
3.0
3.3
V
2.97
3.3
3.63
V
2.25
–
3.63
V
–
6.2
7.5
mA
–
5.4
6.4
mA
–
4.8
5.6
mA
No load condition, f = 125 MHz, Vdd = 1.8V
–
4
mA
Vdd = 2.5V to 3.3V, OE = GND, output is Weakly Pulled Down
No load condition, f = 125 MHz, Vdd = 2.8V, 3.0V, 3.3V or 2.25
to 3.63V
No load condition, f = 125 MHz, Vdd = 2.5V
OE Disable Current
I_OD
–
–
–
3.8
mA
Vdd = 1.8V, OE = GND, output is Weakly Pulled Down
Standby Current
I_std
–
2.6
4.3
A
ST = GND, Vdd = 2.8V to 3.3V, Output is Weakly Pulled Down
–
1.4
2.5
A
ST = GND, Vdd = 2.5V, Output is Weakly Pulled Down
–
0.6
1.3
A
ST = GND, Vdd = 1.8V, Output is Weakly Pulled Down
LVCMOS Output Characteristics
Duty Cycle
Rise/Fall Time
DC
45
–
55
%
Tr, Tf
–
1
2
ns
All Vdds
Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80%
–
1.3
2.5
ns
Vdd =1.8V, 20% - 80%
Vdd = 2.25V - 3.63V, 20% - 80%
–
0.8
2
ns
Output High Voltage
VOH
90%
–
–
Vdd
IOH = -4 mA (Vdd = 3.0V or 3.3V)
Output Low Voltage
VOL
–
–
10%
Vdd
IOL = 4 mA (Vdd = 3.0V or 3.3V)
Input Characteristics
Input High Voltage
VIH
70%
–
–
Vdd
Input Low Voltage
VIL
–
–
30%
Vdd
Pin 1, OE or ST
Input Pull-up Impedence
Z_in
–
87
100
k
Pin 1, OE logic high or logic low, or ST logic high
2
–
–
M
Pin 1, ST logic low
Pin 1, OE or ST
Note:
1. All electrical specifications in the above table are specified with 15 pF output load and for all Vdd(s) unless otherwise stated.
SiTime Corporation
Rev. 1.0
990 Almanor Avenue
Sunnyvale, CA 94085
(408) 328-4400
www.sitime.com
Revised June 12, 2013
SiT8009
High Frequency, Low Power Oscillator
The Smart Timing Choice
The Smart Timing Choice
Electrical Characteristics[1] (continued)
Parameter and Conditions
Symbol
Min.
Typ.
Max.
Unit
Condition
Startup and Resume Timing
Startup Time
Enable/Disable Time
Resume Time
T_start
–
–
5
ms
Measured from the time Vdd reaches its rated minimum value
T_oe
–
–
130
ns
f = 115 MHz. For other frequencies, T_oe = 100 ns + 3 * cycles
T_resume
–
–
5
ms
Measured from the time ST pin crosses 50% threshold
Jitter
RMS Period Jitter
T_jitt
RMS Phase Jitter (random)
T_phj
–
1.93
3
ps
f = 125 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V
–
1.64
4
ps
f = 125 MHz, Vdd = 1.8V
–
0.5
0.9
ps
Integration bandwidth = 900 kHz to 7.5 MHz
–
1.3
2
ps
Integration bandwidth = 12 kHz to 20 MHz
Note:
1. All electrical specifications in the above table are specified with 15 pF output load and for all Vdd(s) unless otherwise stated.
Pin Description
Pin
1
Symbol
Functionality
Top View
Output
Enable
H or Open[2]: specified frequency output
L: output is high impedance. Only output driver is disabled.
Standby
H or Open[2]: specified frequency output
L: output is low (weak pull down). Device goes to sleep mode. Supply
current reduces to I_std.
OE/ ST
Electrical
OE/ST
1
4
VDD
GND
2
3
OUT
ground[3]
2
GND
Power
3
OUT
Output
Oscillator output
4
VDD
Power
Power supply voltage[3]
Notes:
2. A pull-up resistor of